CN105007479A - Glassless multi-view display apparatus and control method thereof - Google Patents

Abstract

Provided are a naked-eye multi-viewpoint display device and a control method thereof. The display device includes: a display panel including a plurality of pixels including a plurality of sub-pixels and configured to arrange and display multi-viewpoint images in an arrangement pattern. The display device further includes: a polarizing film disposed on a rear surface of the display panel, and emitting light having a first polarization direction to a region corresponding to the first portion of each sub-pixel, and emitting light having a second polarization direction emitting to an area corresponding to the second part of each sub-pixel; a polarizing panel arranged on the rear surface of the polarizing film and configured to correct the first polarization direction and the second polarization of the light emitted through the polarizing film The direction is adjusted; the controller is configured to control the driving state of the polarization panel to sequentially provide the first polarization direction and the second polarization direction within an image frame interval.

Description

Naked-eye multi-viewpoint display device and control method thereof

This application claims priority from Korean Patent Application No. 10-2014-0046787 filed with the Korean Intellectual Property Office on Apr. 18, 2014, the disclosure of which is hereby incorporated by reference in its entirety.

technical field

Methods and devices consistent with the exemplary embodiments relate to providing a display device and a control method thereof, and more particularly, to providing a naked-eye multi-viewpoint image display device and a control method thereof.

Background technique

The development of electronic technology has brought about the development and popularization of various types of electronic devices. In particular, a display device such as a television (TV) has been developed as one of many home appliances widely used in homes.

As the quality and performance of display devices increase, the types of content displayed on display devices increase variously. In particular, stereoscopic display systems through which three-dimensional (3D) contents can be viewed have been developed and popularized.

Stereoscopic display systems may be classified into a glasses type system and a naked eye type system according to whether glasses for viewing 3D images are used.

As an example of a glasses type system, there is a shutter glasses type display device. The shutter glasses type indicates a display device of a type that alternately outputs left-eye images and right-eye images, and alternately turns on and off the left and right shutter glasses of the 3D glasses worn by the user so that the user feels a 3D effect .

Glasses-free type systems are also called autostereoscopic systems. The naked-eye 3D display device displays optically separated multi-viewpoint images, and projects light corresponding to images of different viewpoints to the viewer by using a parallax barrier technology or a 3D filter separating visual fields (such as a lenticular lens). on the left and right eyes of the user so that the user can feel the 3D effect.

FIG. 1 is a diagram showing the structure of a related art naked-eye type system.

Existing naked-eye type systems use a 3D filter that separates fields of view and divides the 2D panel in sub-dimensions corresponding to the number of necessary fields of view above a two-dimensional (2D) panel that displays an image. The number of pixels is manufactured with the same size to form the field of view. For example, in a multi-viewpoint system, a relationship between binocular parallax is formed (pixel pitch=viewing distance:spacer (distance between 2D panel and 3D filter)). Therefore, if the binocular parallax of a person is 63mm, and the field of view is formed at a viewing distance of 3m, the distance between the 2D panel and the 3D filter needs to be 4mm. In addition, a planar medium such as a glass is used to maintain the distance between the 2D panel and the 3D filter. Therefore, the formation of the field of view in the multi-viewpoint system is possible, but using mirrors. As a result, the multi-view system becomes heavy. In addition, as the size of the 2D panel increases, the size of the sub-pixel also increases, so the distance between the 2D panel and the 3D filter also increases. Thus, as the thickness of the lens increases, the tolerance of the lens also increases, and thus the uniformity of the lens decreases. As a result, 3D performance decreases.

Contents of the invention

Exemplary embodiments address at least the above problems and/or disadvantages and other disadvantages not described above. Also, an exemplary embodiment is not required to overcome the disadvantages described above, and an exemplary embodiment may not overcome any of the problems described above.

Exemplary embodiments provide a display device and a control method thereof that maintain a distance between a 2D panel and a 3D filter by using a polarizing film and a polarizing panel, thereby reducing the thickness of a medium and maintaining 3D performance.

According to an aspect of an exemplary embodiment, there is provided a display device, including: a display panel configured to include a plurality of pixels, and to arrange and display a multi-viewpoint image in an arrangement style, wherein the plurality of pixels Each pixel in includes a plurality of sub-pixels; a polarizing film is arranged on the rear surface of the display panel, and is configured to emit light having a first polarization direction to an area corresponding to the first part of each sub-pixel, and Light having a second polarization direction is emitted to a region corresponding to the second portion of each sub-pixel; a polarizing panel disposed on the rear surface of the polarizing film and configured to first polarize the light emitted through the polarizing film The direction and the second polarization direction are adjusted; the controller is configured to control the driving state of the polarization panel to sequentially provide the first polarization direction and the second polarization direction within an image frame interval.

The polarizing film is configured to emit light having a first polarization direction in one half of each sub-pixel and emit light having a second polarization direction in the other half of each sub-pixel. The controller is configured to control the driving state of the polarization panel to sequentially provide the first polarization direction in a first subfield interval including half of each subpixel within the one image frame interval, and to provide the first polarization direction in the one image frame interval A second polarization direction is provided in a second subfield interval including the other half of each subpixel within the interval, and the second polarization direction is perpendicular to the first polarization direction.

The controller is configured to provide a multi-viewpoint image displayed in one half of each subpixel in the first subfield interval and in the other half of each subpixel in the second subfield interval within the one image frame interval. The multi-view image is displayed.

The polarizing panel includes: an active polarizing film configured to switch P-wave and S-wave.

The display apparatus may further include: a backlight unit disposed on a rear surface of the polarizing panel and configured to emit light. The polarizing panel is configured to sequentially provide light emitted from the backlight unit to the polarizing film along a first polarizing direction and a second polarizing direction within the one image frame interval.

The display device may further include: a field of view divider disposed on the display panel and configured to provide different viewpoints according to viewing regions based on the multi-viewpoint image.

The display device may further include: a lens unit disposed between the field divider and the display panel.

According to an aspect of another exemplary embodiment, there is provided a method of controlling a display device, wherein the display device includes a display panel including a plurality of pixels and arranging and displaying multi-viewpoint images according to a preset arrangement style , a polarizing film disposed on the rear surface of the display panel and emitting light having different polarization directions to the display panel, and a polarizing panel disposed on the rear surface of the polarizing film, the method comprising: driving the polarizing panel to In a first subfield interval of an image frame interval, light having a first polarization direction corresponding to at least a first part of each subpixel constituting the plurality of pixels is provided to the polarizing film; Light having a second polarization direction corresponding to a second portion of each sub-pixel constituting the plurality of pixels is supplied to the polarizing film in a second subfield section of one image frame section.

The polarizing film emits light having a first polarization direction in one half of each sub-pixel, and emits light having a second polarization direction in the other half of each sub-pixel. The polarizing panel is driven to sequentially provide a first polarization direction in a first subfield interval and a second polarization direction in a second subfield interval.

The polarizing panel is an active polarizing film configured to switch P-wave and S-wave.

The display apparatus may further include a backlight unit (BLU) disposed on a rear surface of the polarizing panel to emit light. The polarizing panel is driven to sequentially provide light emitted from the BLU to the polarizing film along a first polarizing direction and a second polarizing direction within the one image frame interval.

The display device may further include a field divider disposed on the front surface of the display panel and configured to provide different viewpoints according to viewing regions based on the multi-viewpoint image.

The display device may further include a lens unit disposed between the field divider and the display panel.

According to one aspect of an exemplary embodiment, there is provided a display device, including: a display panel including a plurality of pixels and configured to display a multi-viewpoint image in a predetermined arrangement style, wherein each of the plurality of pixels a pixel includes a plurality of sub-pixels; a polarizing film disposed on the display panel and configured to emit light having a first polarization direction in an area corresponding to half of the sub-pixels in the plurality of sub-pixels, and The other half of the sub-pixels emit light with a second polarization direction in a corresponding area; the polarizing panel is arranged on the polarizing film and is configured to provide the light with the first polarization direction and the second polarization direction to the polarizing film; The field of view divider is arranged on the display panel and configured to provide multi-viewpoint images.

The display device also includes: a controller configured to control a driving state of the polarization panel.

The field divider is at least one of a lenticular lens and a parallax barrier.

The first polarization direction is perpendicular to the second polarization direction.

The polarizing panel includes an active polarizing film configured to switch P-wave and S-wave.

The display device also includes a lens unit disposed between the field divider and the display panel.

Description of drawings

The above and/or other aspects will become apparent by describing certain exemplary embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a diagram showing the structure of a related art naked-eye type system;

FIG. 2 is a diagram illustrating an operation of a naked-eye 3D display device according to an exemplary embodiment;

3A is a block diagram illustrating a structure of a display device according to an exemplary embodiment;

3B is a block diagram illustrating a structure of a display device according to another exemplary embodiment;

FIG. 4 is a diagram illustrating a structure of a display device according to an exemplary embodiment;

5A and 5B are diagrams illustrating a method of driving a display device according to an exemplary embodiment;

FIG. 6 is a flowchart illustrating a method of controlling a display device according to an exemplary embodiment.

Detailed ways

Exemplary embodiments are described in more detail with reference to the accompanying drawings.

In the following description, the same reference numerals are used for the same elements even in different drawings. Matters defined in the specification, such as detailed construction and elements, are provided to assist in a comprehensive understanding of the exemplary embodiments. Therefore, it is apparent that the exemplary embodiments can be carried out without those specifically defined matters. Also, well-known functions or constructions are not described in detail since they would obscure the exemplary embodiments with unnecessary detail.

FIG. 2 is a diagram illustrating an operation of a glasses-free 3D display device according to an exemplary embodiment.

FIG. 2 illustrates a method of operating an apparatus displaying multi-viewpoint images to provide a 3D image in a naked-eye mode. Here, the multi-viewpoint image includes a plurality of images acquired by capturing a subject at different angles. In other words, multiple images captured at different angles are refracted at different angles and focused at multiple positions (for example, about 3 meters) maintaining a preset distance (referred to as viewing distance). The location where such an image is formed is called the viewing area. Therefore, if the user's one eye is positioned at the first viewing area and the other eye is positioned at the second viewing area, the user can obtain a 3D effect.

For example, FIG. 2 is a diagram illustrating an operation of displaying a multi-viewpoint image having a total of six viewpoints. Referring to FIG. 2 , the naked-eye 3D display device may project light corresponding to an image having a first viewpoint among six viewpoints onto a left eye, and project light corresponding to an image having a second viewpoint among six viewpoints to a right eye. eyes. Therefore, a user can watch images with different viewpoints using left and right eyes to obtain a 3D effect.

FIG. 3A is a block diagram illustrating a structure of a display device 100 according to an exemplary embodiment.

Referring to FIG. 3A , the display device 100 may be implemented as various types of display devices such as TVs, monitors, cellular phones, personal computers (PCs), on-board PCs, self-service PCs, electronic photo frames, and the like.

The display device 100 includes an image output unit 110 and a controller 120 .

The image output unit 110 provides multiple views (or multiple optical views). The image output unit 110 includes a polarizing panel 111 providing multi-view, a polarizing film (film) 112 , a display panel 113 and a field divider 114 .

The display panel 113 includes a plurality of pixels including a plurality of sub-pixels. Here, the sub-pixels may include red (R) sub-pixels, green (G) sub-pixels and blue (B) sub-pixels. In other words, pixels including R sub-pixels, G sub-pixels, and B sub-pixels may be arranged in a plurality of rows and a plurality of columns to constitute the display panel 113 . In this case, the display panel 113 may be implemented as various types of display units such as a liquid crystal display (LCD) panel, a plasma display panel (PDP), an organic light emitting diode (OLED), a vacuum fluorescent display (VFD), Field emission display (FED), electroluminescence display (ELD), etc.

The display panel 113 displays image frames. In detail, the display panel 113 may display image frames in which a plurality of images having different viewpoints are sequentially and repeatedly arranged.

The field divider 114 may be disposed on the front surface of the display panel 113 to provide different viewpoints (ie, multi-viewpoints) according to viewing areas. In this case, the field divider 114 may be implemented as a lenticular lens or a parallax barrier.

For example, the field divider 114 may be implemented as a lenticular lens including a plurality of lens regions. A lenticular lens is an array of magnifying lenses that magnify different images when viewed from different angles. Therefore, the lenticular lens may refract an image displayed on the display panel 113 through a plurality of lens areas. Each lens area may be formed in a size corresponding to at least one pixel to differently diffuse light penetrating each pixel according to a viewing area.

As another example, the field of view divider 114 may be implemented as a parallax barrier. A parallax barrier is a device that, when placed in front of an image source such as a liquid crystal display, allows the image source to display stereoscopic or multi-viewpoint images without requiring the viewer to wear 3D glasses. The parallax barrier allows each eye to see a different set of pixels, creating the perception of depth. The parallax barrier is implemented as an array of transparent slits comprising multiple barrier regions. Accordingly, the parallax barrier may block light emitted through the slits positioned between barrier regions to emit images having different viewpoints according to viewing regions.

The field of view divider 114 may be arranged to be inclined at a preset angle to improve image quality. The controller 120 may divide the multi-viewpoint image into a plurality of images based on an angle at which the field of view divider 114 is tilted, and combine the plurality of images to generate an image frame. Accordingly, a user may view an image displayed with a preset inclination relative to the sub-pixels of the display panel 113 instead of viewing an image displayed in a vertical direction or a horizontal direction relative to the sub-pixels.

The polarizing film 112 is disposed on the rear surface of the display panel 113 and emits light having different polarization directions in regions corresponding to some sub-pixels of the plurality of pixels. For example, the polarizing film 112 may be implemented to include vertical and horizontal linear polarizing films.

In detail, the polarizing film 112 may be configured to emit light having a first polarization direction (for example, light having a vertical polarization direction) in half of each sub-pixel of the plurality of pixels, and emit light in the other half of each sub-pixel. Light having a second polarization direction perpendicular to the first polarization direction (eg, light having a horizontal polarization direction).

The polarizing panel 111 is disposed on the rear surface of the polarizing film 112 and may adjust a polarization direction provided to the polarizing film 112 . For example, the polarizing panel 111 may be implemented as an active polarizing film enabling a polarization switch (PS).

Here, the polarizing panel 111 may be implemented as a linear polarization type, a circular polarization type, or an elliptical polarization type. However, for convenience of description, the polarization panel 111 will be described as being implemented as a linear polarization type.

The polarizing panel 111 may operate in a low frequency band and/or a high frequency band to provide different polarization directions. For example, if vertically linearly polarized light is incident and the active polarizing film operates in a low frequency band, the vertically linearly polarized light is changed in a 90° direction. Therefore, the vertical linearly polarized light is changed into the horizontally linearly polarized light, and the vertically linearly polarized light can be emitted without being changed in the high frequency band.

The controller 120 controls the overall operations of the display device 100 .

Specifically, the controller 120 may control the driving state of the polarization panel 111 to sequentially provide different polarization directions within an image frame interval displayed on the display panel 113 . Here, different polarization directions may correspond to different polarization directions in which the polarizing film 112 respectively emits light in regions corresponding to at least some sub-pixels of the plurality of pixels.

Specifically, if the polarizing film 112 emits light with a vertical polarization direction in half of each sub-pixel of the plurality of pixels, and emits light with a vertical polarization direction in the other half of each sub-pixel of the plurality of pixels If the light in the horizontal polarization direction is light, the controller 120 can control the driving state of the polarizing panel 111 to sequentially provide the vertical polarization direction in the first subfield interval and the horizontal polarization direction in the second subfield interval within an image frame interval. .

Therefore, the controller 120 may control to provide the multi-viewpoint image displayed in half of each sub-pixel in the first subfield interval of the image frame, and provide the multi-viewpoint image displayed in half of each sub-pixel in the second subfield interval within one image frame interval. The multi-view image displayed in the other half of each sub-pixel. Furthermore, within one image frame interval, half of the entire field of view may be sequentially provided to the user, followed by the other half of the entire field of view.

The display apparatus 100 may further include a backlight unit (BLU) 115 disposed on the rear surface of the polarizing panel 111 to emit light. Here, one of white light-emitting diodes (LEDs) and colored LEDs may be used as a light source for the BLU 115 .

In this case, the polarizing panel 111 may sequentially provide the light emitted from the BLU to the polarizing film 112 along different polarization directions within one image frame interval.

In addition, the display apparatus 100 may further include a lens unit disposed between the field divider 114 and the display panel 113 .

FIG. 3B is a block diagram illustrating a structure of a display device 100 according to another exemplary embodiment.

Referring to FIG. 3B , the display device 100 includes an image output unit 110 , a controller 120 , an image receiver 130 , an image processor 140 , a voltage driver 150 and a memory 160 . Detailed descriptions of elements of FIG. 3B that are the same as those described in FIG. 3A are omitted.

An image input device (not shown) receives image and depth information. In detail, the image input device may receive images and depth information of the images from various types of external devices such as external storage media, broadcasting stations, web servers, and the like. Here, the received image is one of a single-viewpoint image, a stereoscopic image, and a multi-viewpoint image. A monoscopic image is an image captured by a general photographing device, and a stereoscopic image is a 3D video image expressed using only a left-eye image and a right-eye image (ie, a 3D image captured by a stereoscopic photographing device). In general, a stereo camera is used to capture a 3D image using a camera including two lenses. A multi-viewpoint image refers to a 3D video image formed by geometrically correcting and spatially combining images captured by one or more photographing devices, wherein the 3D video image is used to provide various viewpoints in multiple directions to a user.

The image input device may also receive depth information of the image. In general, the depth of an image is a depth value assigned to each pixel of the image, for example, an 8-bit depth may have grayscale values between 0 and 255. For example, when black and/or white are used to represent depth, black (low values) may indicate images that are further away from the viewer and white (high values) may indicate images that are closer to the viewer.

The depth information refers to information indicating the depth of the 3D image, that is, information corresponding to the degree of binocular disparity between the left-eye image and the right-eye image constituting the 3D image. The degree of the 3D effect perceived by a human varies according to the depth information. In other words, if the depth is large, the binocular parallax is large, so a relatively large 3D effect is felt. If the depth is small, the binocular parallax is small, so a relatively small 3D effect is felt. Depth information can generally be obtained by passive methods using only 2D features of the image, such as stereo matching, and active methods using devices such as depth cameras. The depth information may be in the form of a depth map. A depth map refers to a table including depth information of each region of an image. Regions can be divided in units of pixels, and can be defined as preset regions larger than pixel units. For example, a depth map may indicate a grayscale value of 127 or 128 between 0 and 255 as a reference value (i.e., 0 (or focal plane)), to indicate values less than 127 or 128 as negative and greater than 127 or 128 The value of is indicated as a positive value. The reference value of the focal plane can be selected arbitrarily between 0 and 255. Negative values indicate sinking and positive values indicate projecting. A depth map may also be an image or image channel that contains information about distances from viewpoints to surfaces of scene objects.

The image processor 140 may render a multi-viewpoint image based on depth information.

In detail, in case of a 2D image, the image processor 140 may render the multi-viewpoint image based on depth information extracted from 2D and/or 3D conversion. Alternatively, if multiple viewpoints (that is, N viewpoints) and corresponding N pieces of depth information are input, the image processor 140 may base on at least one of the input N viewpoints and at least one of the N pieces of depth information Depth information for rendering multi-viewpoint images. Also, if only N viewpoints are input, the image processor 140 may extract depth information from the N viewpoints and render a multi-viewpoint image based on the extracted depth information.

However, the above-described detailed operations of the image processor 140 are just examples, and the image processor 120 may render the multi-view image through various methods other than the above-described operations.

The voltage driver 150 generates a driving voltage and supplies the driving voltage to the image output unit 110 .

In detail, the voltage driver 150 may supply voltage to the polarizing panel 111 under the control of the controller 120 .

The memory 160 is a storage medium storing various types of programs required to operate the display apparatus 100, and may be implemented as a memory, a hard disk drive (HDD), or the like.

FIG. 4 is a diagram illustrating a structure of a display device according to an exemplary embodiment.

As shown in FIG. 4 , the polarizing panel 111 , the polarizing film 112 , the display panel 113 and the field divider 114 may be sequentially arranged, and the lens unit 115 may be arranged between the display panel 113 and the field divider 114 . However, the lens unit 115 may be omitted. For example, if a field of view corresponding to binocular parallax can be realized without the lens unit 115, the lens unit 115 may be omitted.

The display panel 113 may include a plurality of pixels, each of which may include R sub-pixels, G sub-pixels and B sub-pixels. Here, the distance between sub-pixels may be 50 μm, but is not limited thereto.

In this case, the polarizing film 112 may emit light having a first polarization direction in a region 420 corresponding to half of one subpixel 410, and emit light having a second polarization direction in a region 430 corresponding to the other half of the subpixel 410. Polarized light. Here, the second polarization direction may be a direction perpendicular to the first polarization direction.

The polarizing panel 111 can sequentially provide light having a first polarization direction and a second polarization direction respectively corresponding to the regions 420 and 430 constituting the polarizing film within an image frame interval, wherein the regions 420 and 430 respectively emit light in the first polarization direction. and the second polarization direction. For example, a polarization switch (PS) panel may be used as the polarization panel 111 and may alternately switch P waves and S waves within one image frame interval under the control of the controller 120 .

An S wave is an elastic wave that moves like a shear or shear wave, so the motion is perpendicular to the direction of wave propagation. The propagation mode of P waves is longitudinal. When S-waves or P-waves strike the interface at angles other than 90 degrees, a phenomenon known as mode switching occurs.

In the structure of the display device described above, an image provided in one sub-pixel may be divided into a left eye and a right eye which are sequentially provided to a user. Accordingly, a 3D image can be realized without increasing the distance between the field divider (eg, 3D filter) and the display panel (ie, 2D display panel). As a result, a 3D image with high resolution can be realized by reducing the distance between the 3D filter and the 2D panel to 2mm or less.

A method of driving the display device shown in FIG. 4 will now be described in detail with reference to the accompanying drawings.

5A and 5B are diagrams illustrating a method of driving a display device, according to an exemplary embodiment.

Unpolarized light from a BLU (not shown) can pass through a display panel 113 (e.g., an LCD panel) to have a specific polarization (ordinary light and/or extraordinary light), and the polarizing panel 111 can be driven to maintain or change the specific polarization .

In detail, as shown in FIG. 5A, in the first subfield interval within one image frame interval, the polarizing panel 111 may be opened, so that the light provided from the BLU may be directed in the same direction as the transmission axis of the polarizing film 112. output. Therefore, light can be output for half of each sub-pixel.

For example, as shown in FIG. 5A, as the polarizing panel 111 is opened, the light provided from the BLU may have a polarization direction And may be output only for the regions 421 , 422 and 423 of the polarizing film 112 corresponding to the respective polarization directions. For example, the light supplied from the BLU penetrates only the region 422 of the polarizing film 112 corresponding to the half 411 of the sub-pixel 410, and thus, the light corresponding to the half 411 of the sub-pixel 410 is incident to the user's left or right eye.

As shown in FIG. 5B , in the second subfield interval, the polarizing panel 111 is turned off, so light supplied from the BLU may be output in the same direction as the absorption axis of the polarizing film 112 . Therefore, light is only output for the other half of each subpixel.

For example, as shown in FIG. 5B, with the polarizing panel 111 turned off, the light provided from the BLU may have a polarization direction And may be output only for the regions 431 , 432 and 433 of the polarizing film 112 corresponding to the respective polarization directions. Therefore, the light supplied from the BLU may only pass through the region 432 of the polarizing film 112 corresponding to the other half 412 of the sub-pixel 410, and thus the light corresponding to the other half 412 of the sub-pixel 410 may be incident into the left and right eyes of the user. the other eye to achieve a 3D image.

However, the above-described exemplary embodiments are merely examples, and a driving state for turning on and/or off the polarizing panel 111 and polarization of the polarizing panel 111 may be variously modified within the scope of the exemplary embodiments.

Therefore, half of the entire field of view can be formed in the first subfield interval of an image frame interval, and the other half of the field of view can be formed in the second subfield interval of the image frame interval. Therefore, the thickness of the lens for maintaining the distance between the display panel and the field divider can be reduced to half. In addition, since the thickness of the lens is reduced, the tolerance of the lens is reduced, which can ensure the uniformity of the lens to improve 3D performance.

FIG. 6 is a flowchart illustrating a method of controlling a display device according to an exemplary embodiment.

Referring to FIG. 6 , the display device includes a display panel and a polarizing film, wherein the display panel includes a plurality of pixels for arranging and displaying multi-viewpoint images according to a preset arrangement pattern, and the polarizing film is arranged on the rear surface of the display panel, at least emitting light having a first polarization direction in an area corresponding to a first portion of each sub-pixel of the plurality of pixels, and emitting light having a second polarization direction in at least an area corresponding to a second portion of each sub-pixel constituting the plurality of pixels. Polarized light. In operation S610, the display device drives the polarizing panel disposed on the rear surface of the polarizing film to provide a polarization direction corresponding to at least half of each sub-pixel in a first subfield interval constituting one image frame interval.

In operation S620, the display device drives the polarization panel to provide a polarization direction corresponding to a second portion of each sub-pixel within a second subfield interval constituting the one image frame interval.

Here, the polarizing film may be configured to emit light having a first polarization direction in one half of each sub-pixel, and emit light having a second polarization direction perpendicular to the first polarization direction in the other half of each pixel.

In this case, in operations S610 and S620, the display device may drive the polarizing panel to sequentially provide the first polarization direction in the first subfield interval corresponding to half of the subpixels, and provide the first polarization direction in the first subfield interval corresponding to the other half of the subpixels. A second polarization direction is provided in the corresponding second subfield interval.

The polarizing panel can be implemented as an active polarizing film that switches P-wave and S-wave.

In addition, the display device may further include a BLU disposed on the rear surface of the polarizing panel to emit light. In this case, the display device may drive the polarizing panel to sequentially provide the light emitted from the BLU to the polarizing film along different polarization directions within one image frame interval in operations S610 and S620.

The display device may further include a field divider disposed on the front surface of the display panel to provide different viewpoints according to viewing regions based on the multi-viewpoint image.

The display device may further include a lens unit disposed between the field divider and the display panel.

According to various exemplary embodiments as described above, in a naked-eye type system, the thickness of a medium maintaining a distance between a 2D panel and a 3D filter may be reduced, and 3D performance may be maintained.

The method of controlling a display device according to the above-described exemplary embodiments may be implemented as a program and then provided to the display device.

For example, there may be provided a non-transitory computer-readable medium storing a program for implementing a structure that provides a polarization direction corresponding to at least a portion of each sub-pixel during a first sub-field interval, and provides a polarization direction corresponding to at least a portion of each sub-pixel during a first sub-field interval and The polarization direction corresponding to the other half of each sub-pixel is provided in the interval of two sub-fields.

A non-transitory computer-readable medium refers to a medium that does not store data for a short period of time such as a register, a cache, or a memory, but stores data semi-permanently and can be read by a device. In detail, the above-mentioned various applications or programs may be stored and provided on a non-transitory computer readable medium such as CD, DVD, hard disk, Blu-ray disc, Universal Serial Bus (USB), memory card, ROM, etc.

The foregoing exemplary embodiments and advantages are exemplary only and should not be construed as limiting. The present teachings are readily applicable to other types of devices. Furthermore, the description of the exemplary embodiments is intended to be illustrative, not to limit the scope of the claims, and many alternatives, modifications, and changes will be apparent to those skilled in the art.

Claims (15)

1. A display device, comprising: a display panel comprising a plurality of pixels and configured to arrange and display multi-viewpoint images according to an arrangement pattern, wherein each pixel of the plurality of pixels includes a plurality of sub-pixels; a polarizing film disposed on the rear surface of the display panel and configured to transmit light having a first polarization direction through a region corresponding to the first portion of each sub-pixel, and transmit light having a second polarization direction corresponding to each sub-pixel. The corresponding area of the second part of sub-pixels; a polarizing panel disposed on the rear surface of the polarizing film and configured to adjust a first polarization direction and a second polarization direction of light transmitted by the polarizing film; The controller is configured to control the driving state of the polarization panel to sequentially provide the first polarization direction and the second polarization direction within an image frame interval. 2. The display device of claim 1, wherein: The polarizing film is configured to transmit light having a first polarization direction in one half of each sub-pixel, and transmit light having a second polarization direction in the other half of each sub-pixel; The controller is configured to control the driving state of the polarization panel to sequentially provide the first polarization direction in a first subfield interval including half of each subpixel within the one image frame interval, and to provide the first polarization direction in the one image frame interval The second polarization direction is provided in the second subfield interval including the other half of each subpixel in the interval, The second polarization direction is perpendicular to the first polarization direction. 3. The display device according to claim 2, wherein the controller is configured to provide a multi-viewpoint image displayed in half of each sub-pixel in the first subfield interval within the one image frame interval and The multi-view image displayed in the other half of each sub-pixel is provided in the two-subfield interval. 4. The display device of claim 2, wherein the polarizing panel comprises: an active polarizing film configured to switch the P wave and the S wave. 5. The display device of claim 1, further comprising: a backlight unit disposed on the rear surface of the polarizing panel and configured to emit light, Wherein, the polarizing panel is configured to sequentially provide light emitted from the backlight unit to the polarizing film along the first polarizing direction and the second polarizing direction within the one image frame interval. 6. The display device of claim 1, further comprising: The field of view divider is arranged on the display panel and configured to provide different viewpoints according to the viewing area based on the multi-viewpoint image. 7. The display device of claim 6, further comprising: The glass unit is arranged between the field divider and the display panel. 8. A method of controlling a display device, wherein the display device includes a display panel including a plurality of pixels and arranging and displaying multi-viewpoint images in a preset arrangement pattern, arranged on a rear surface of the display panel, and Transmitting light having different polarization directions to reach a polarizing film of a display panel and a polarizing panel disposed on a rear surface of the polarizing film, the method includes: driving the polarizing panel to provide light having a first polarization direction corresponding to at least a first portion of each subpixel constituting the plurality of pixels to the polarizing film in a first subfield interval of an image frame interval; The polarizing panel is driven to supply light having a second polarization direction corresponding to a second portion of each sub-pixel constituting the plurality of pixels to the polarizing film in a second subfield section of the one image frame section. 9. The method of claim 8, wherein the polarizing film transmits light having a first polarization direction in one half of each sub-pixel and transmits light having a second polarization direction in the other half of each sub-pixel through, Wherein, the polarizing panel is driven to sequentially provide the first polarization direction in the first subfield interval, and provide the second polarization direction in the second subfield interval. 10. The method of claim 8, wherein the polarizing panel is an active polarizing film configured to switch P-wave and S-wave. 11. The method of claim 8, wherein the display device further comprises a backlight unit disposed on a rear surface of the polarizing panel so as to emit light, Wherein, the polarizing panel is driven to sequentially provide light emitted from the backlight unit to the polarizing film along the first polarization direction and the second polarization direction within the one image frame interval. 12. The method of claim 8, wherein the display device further comprises a field divider disposed on the front surface of the display panel to provide different viewpoints according to viewing regions based on the multi-view image. 13. The method of claim 12, wherein the display device further comprises a glass unit disposed between the field divider and the display panel. 14. A display device comprising: a display panel, comprising a plurality of pixels and configured to display multi-viewpoint images in a predetermined arrangement, wherein each pixel of the plurality of pixels comprises a plurality of sub-pixels; a polarizing film disposed on the display panel and configured to transmit light having a first polarization direction in an area corresponding to half of the sub-pixels among the plurality of sub-pixels, and The other half of the corresponding area transmits light having a second polarization direction; a polarizing panel disposed on the polarizing film and configured to provide light having a first polarization direction and a second polarization direction to the polarizing film; The field of view divider is arranged on the display panel and configured to provide multi-viewpoint images. 15. The display device of claim 14, further comprising: a controller configured to control a driving state of the polarization panel.